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Quetzalcoatlus. Quetzalcoatlus (/ kɛtsəlkoʊˈætləs /) is a genus of azhdarchid pterosaur known from the Late Cretaceous Maastrichtian age of North America. The first specimen, recovered in 1971 from the Javelina Formation, consists of several wing fragments. It was made the holotype of Quetzalcoatlus northropi in 1975 by Douglas Lawson and ...
The premise of the Solutrean Hypothesis is that the similarities between Clovis and Solutrean lithic technologies are evidence that the Solutreans were the first people to migrate to the Americas, dating long before mainstream scientific theories of the peopling of the Americas. Proposed originally during the 1970s, the theory has received some ...
There were two areas where early success attracted considerable public attention, the transition between reptiles and birds, and the evolution of the modern single-toed horse. [77] In 1861 the first specimen of Archaeopteryx , an animal with both teeth and feathers and a mix of other reptilian and avian features, was discovered in a limestone ...
A = Anapsid, B = Synapsid, C = Diapsid. It was traditionally assumed that first reptiles were anapsids, having a solid skull with holes only for the nose, eyes, spinal cord, etc.; [10] the discoveries of synapsid-like openings in the skull roof of the skulls of several members of Parareptilia, including lanthanosuchoids, millerettids, bolosaurids, some nycteroleterids, some procolophonoids and ...
Pelycosaur (/ ˈ p ɛ l ɪ k ə ˌ s ɔːr / PEL-ih-kə-sor) [1] is an older term for basal or primitive Late Paleozoic synapsids, excluding the therapsids and their descendants. Previously, the term mammal-like reptile had been used, [2] and pelycosaur was considered an order, but this is now thought to be incorrect and outdated.
Pterodactylus (from Ancient Greek: πτεροδάκτυλος, romanized: pterodáktylos ' winged finger ' [2]) is a genus of extinct pterosaurs.It is thought to contain only a single species, Pterodactylus antiquus, which was the first pterosaur to be named and identified as a flying reptile and one of the first prehistoric reptiles to ever be discovered.
Map of early human migrations based on the Out of Africa theory; figures are in thousands of years ago (kya). [1]The peopling of the Americas began when Paleolithic hunter-gatherers (Paleo-Indians) entered North America from the North Asian Mammoth steppe via the Beringia land bridge, which had formed between northeastern Siberia and western Alaska due to the lowering of sea level during the ...
Snakes are a common occurrence in myths for a multitude of cultures. The Hopi people of North America viewed snakes as symbols of healing, transformation, and fertility. Snakes in Mexican folk culture tell about the fear of the snake to the pregnant women where the snake attacks the umbilical cord. [1] The Great Goddess often had snakes as her ...